Womens' Health
Research Study
Join a University of Colorado research study examining how the use of oral contraceptives affects a woman's weight, body composition, and appetite.
Compensation Provided
Conducted in Aurora, CO
Women with overweight or obesity
Not Using Hormonal Contraception
18 - 40 Years Old
Fast Facts
About Our Research Study
Further women's health research by joining our compensated study.
Approximately 15 million women of reproductive-age in the United States have overweight or obesity AND use a combined oral contraceptive pill (COC). Though many women report weight gain as a side effect of COCs, a definitive link between COC use and weight gain has not been established.

The purpose of this study is to learn how starting a COC affects weight when compared to non-hormonal methods of birth control.

Join our study to learn more about how weight, fat distribution, eating behaviors, and appetite may change over 6 months from COC initiation.
Additional Information
Why is this study being done?
The purpose of this study is to learn how starting a combined oral contraceptive pill affects weight when compared to non-hormonal methods of birth control.
Is this study for me?
You may qualify for this study if you meet the following criteria.

Eligibility Criteria:
  • Pre-menopausal
  • 18 to 40 years old
  • BMI between 25-39.9 kg/m2. Calculate your BMI here.
  • Not currently using a hormonal form of birth control
  • Generally healthy
  • Non-smoker
What will happen if I participate in the study?
  • You will receive a brief medical consultation (in person or telehealth) about birth control options
  • Make a shared-decision with a medical provider to start an oral contraceptive pill for at least 6 months or continue on non-hormonal contraception
  • You will receive an initial assessment of body composition and complete labwork
  • You will keep a 3-day food record at the beginning and end of the study
  • You will complete questionnaires about eating behaviors and appetite at the start of the study and 3 and 6 months later
Will I be paid for being in this research study?
Compensation up to $300 is provided for participation in this study.
Will it cost me anything to participate in this study?
There is no cost for you to participate in our research program.